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EN 1.4418 Stainless Steel vs. EN 1.7710 Steel

Both EN 1.4418 stainless steel and EN 1.7710 steel are iron alloys. They have 80% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4418 stainless steel and the bottom bar is EN 1.7710 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 16 to 20
6.8 to 11
Fatigue Strength, MPa 350 to 480
500 to 620
Impact Strength: V-Notched Charpy, J 62 to 90
30
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 860 to 1000
930 to 1070
Tensile Strength: Yield (Proof), MPa 540 to 790
800 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 870
440
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
41
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 13
3.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.2
Embodied Energy, MJ/kg 39
30
Embodied Water, L/kg 130
57

Common Calculations

PREN (Pitting Resistance) 20
4.5
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
73 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 730 to 1590
1680 to 2970
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 31 to 36
33 to 38
Strength to Weight: Bending, points 26 to 28
27 to 30
Thermal Diffusivity, mm2/s 4.0
11
Thermal Shock Resistance, points 31 to 36
27 to 31

Alloy Composition

Carbon (C), % 0 to 0.060
0.12 to 0.18
Chromium (Cr), % 15 to 17
1.3 to 1.8
Iron (Fe), % 73.2 to 80.2
95.1 to 97
Manganese (Mn), % 0 to 1.5
0.6 to 1.0
Molybdenum (Mo), % 0.8 to 1.5
0.8 to 1.0
Nickel (Ni), % 4.0 to 6.0
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 0.7
0 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0
0.15 to 0.25